CN103883586A - Dustproof device for oil cylinder - Google Patents
Dustproof device for oil cylinder Download PDFInfo
- Publication number
- CN103883586A CN103883586A CN201410005309.XA CN201410005309A CN103883586A CN 103883586 A CN103883586 A CN 103883586A CN 201410005309 A CN201410005309 A CN 201410005309A CN 103883586 A CN103883586 A CN 103883586A
- Authority
- CN
- China
- Prior art keywords
- cylinder
- piston rod
- dirt
- oil cylinder
- piston
- Prior art date
Links
- 239000000428 dust Substances 0.000 claims abstract description 30
- 238000007906 compression Methods 0.000 claims description 8
- 239000003921 oil Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000414 obstructive Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Abstract
The invention provides a dustproof device for an oil cylinder. The dustproof device for the oil cylinder comprises a cylinder body, a piston rod and a dustproof sleeve. A piston is arranged in the cylinder body; one end of the piston rod is connected with the piston while the other end of the piston rod extends out of the cylinder body from the interior of the cylinder body; the dustproof sleeve sleeves the piston rod outside the cylinder body, and one end of the dustproof sleeve is fixedly and hermetically connected with the piston rod while the other end of the dustproof sleeve is connected with the cylinder body. Compared with the prior art, the dustproof device for the oil cylinder has the advantages that owing to the dustproof sleeve arranged between the piston rod and the cylinder body, external dust can be prevented from entering the cylinder body along with movement of the piston rod to block the cylinder body, damage to the piston rod is avoided, and flexibility in movement of the cylinder body and the piston rod is guaranteed.
Description
Technical field
The invention relates to dustproof field, relate in particular to a kind of oil cylinder dust guard.
Background technique
In prior art, in the process of use mould pressing component, because meeting on workpiece is with certain dust, after having suppressed, the dust on workpiece can along under the take blame for others inwall of cylinder body enter into oil cylinder, these dusts can adhere to piston rod, in piston rod movement process, easily there is cut, drop into in-oil cylinder dust simultaneously and also can stop up piston, bring and have a strong impact on to production, increased greatly cost of production simultaneously.
Therefore, be necessary prior art to do further improvement.
Summary of the invention
The object of the invention is to overcome the defect of prior art, a kind of oil cylinder dust guard of good dustproof effect is provided.
For reaching aforementioned object, a kind of oil cylinder dust guard of the present invention, it comprises: cylinder body, is provided with piston in it;
Piston rod, its one end is connected with described piston, and the other end stretches out outside described cylinder body in described cylinder body;
Dirt-proof boot, it is set on the piston rod of described cylinder body outside, described dirt-proof boot one end and described piston rod fixed seal connection, the other end is connected with described cylinder body.
As one embodiment of the present of invention, it also comprises compensation push rod, and it is arranged on the end of described piston rod and is fixedly connected with described piston rod, and the end of described compensation push rod is provided with nut.
As one embodiment of the present of invention, the end of described cylinder body offers perforate, and described piston rod one end is fixedly connected with described piston, and the other end stretches out outside described cylinder body through described perforate, and wherein, the diameter of described perforate is less than the diameter of described nut.
As one embodiment of the present of invention, described dirt-proof boot comprises:
The first sealed department, itself and described piston rod are to being tightly connected;
The second joint, it radially and with the end of described cylinder body is connected along described piston rod;
Pleated portions and sidepiece between described the first sealed department and the second joint, described sidepiece is to extend to form to both sides from described pleated portions.
As one embodiment of the present of invention, described piston rod moves up and down vertically, drive the pleated portions of described dirt-proof boot to move up and down with piston rod, described pleated portions drives the sidepiece of its both sides along described piston rod to opening or closing motion with respect to described pleated portions, and then completes elongation or the compression movement of described dirt-proof boot.
As one embodiment of the present of invention, described pleated portions comprises outer pleated portions and interior pleated portions, and the angle that the elongation line of adjacent side forms is 30 ° to 90 °.
As one embodiment of the present of invention, between described interior pleated portions and described piston rod, interval is gapped.
As one embodiment of the present of invention, described the first sealed department is the periphery that is installed in described axial piston bar.
As one embodiment of the present of invention, the end of described the second joint and described cylinder body is bolted.
As one embodiment of the present of invention, the end of described the second joint and described cylinder body has gap.
Beneficial effect of the present invention: compared with prior art, oil cylinder dust guard of the present invention, by dirt-proof boot being set between piston rod and cylinder body, can prevent the be moved into obstruction that cylinder interior to cylinder body cause of external dust with piston rod, also avoided the damage of piston rod, ensured the flexibility of piston rod and movement of cylinder block simultaneously.
Brief description of the drawings
Fig. 1 is the structural representation of oil cylinder dust guard of the present invention in a specific embodiment;
Fig. 2 is the structural representation of dirt-proof boot of the present invention in a specific embodiment.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Alleged " embodiment " or " embodiment " refers to special characteristic, structure or the characteristic that can be contained at least one implementation of the present invention herein.Different local in this manual " in one embodiment " that occur not all refer to same embodiment, neither be independent or the embodiment mutually exclusive with other embodiments optionally.
Refer to Fig. 1, Fig. 1 is the structural representation of oil cylinder dust guard of the present invention in a specific embodiment.Described dust guard comprises cylinder body 1, piston rod 2, dirt-proof boot 3, compensation push rod 4 and nut 5.
Under described cylinder body 1 is positioned at, take blame for others 6, be provided with piston (not shown) in cylinder body 1, described piston is fixedly connected with described piston rod 2, and described piston rod 2 stretches out cylinder body 1 outside from the perforate (not shown) of described cylinder body 1 end 11.Described cylinder body 1 is divided into two chambers (not shown) by described piston, promote described piston and move reciprocatingly, and then the piston rod 2 that described piston driving is connected with described piston moves reciprocatingly by the pressure of the hydraulic oil in chamber.
Described piston rod 2 stretches out the end 11 of described cylinder body 1 in described cylinder body 1.Described piston rod 2 one end are stretched in described cylinder body 1 and are fixedly connected with piston, the other end is connected with compensation push rod 4, the end of described compensation push rod 4 is provided with nut 5, described nut 5 can block its fallen part dust in top, described compensation push rod 4 is for the length of compensating piston bar 2, when piston rod 2 is by piston driving during to the interior motion of cylinder body 1, as as described in piston rod 2 enter completely in cylinder body 1, described compensation push rod 4 is also to the interior motion of cylinder body 1, now be less than the diameter of described piston rod 2 due to the diameter of described compensation push rod 4, make described compensation push rod 4 and the perforate of cylinder body 1 end have larger gap, wherein, the diameter of described nut 5 is greater than the diameter of described cylinder body 1 end 11 perforates, therefore, when compensation push rod 4 enters cylinder body 1 when interior, described nut 5 can prevent that dust above from falling in cylinder body 1 by the perforate on cylinder body 1 end 11.
Dirt-proof boot 3, it is set on the piston rod 2 of described cylinder body 1 outside, and with piston rod 2 motions, described dirt-proof boot 3 one end and 2 fixed seal connections of described piston rod, the other end is connected with described cylinder body 1.In the present invention, described dirt-proof boot 3 is made for elastic material.Refer to Fig. 2, it is the structural representation of dirt-proof boot of the present invention in a specific embodiment.Described dirt-proof boot 3 comprises the first sealed department 311, the second joint 312, pleated portions 313 and sidepiece 314 between described the first sealed department 311 and the second joint 312.Described the first sealed department 311 is be installed in the peripheral of described axial piston bar 2 and be tightly connected with described piston rod 2.In one embodiment, between being connected of described the first sealed department 311 and described piston rod 2, be provided with seal ring and fixing device (not shown), dirt-proof boot 3 firmly can be locked on described piston rod 2 by this fixing device, seal ring plays the gastight effect of sealing.In another embodiment, described the first sealed department 311 is not limited with the Placement of described piston rod 2, as long as can be that both are tightly connected.
Described pleated portions 313 comprises outer pleated portions 3131 and interior pleated portions 3132, and described sidepiece 314 is to extend to form to both sides from described pleated portions 313.Described the first sealed department 311 is connected with described piston rod 2 axial seals, and described the second joint 312 radially and with the end 11 of described cylinder body 1 is connected along described piston rod 2.In one embodiment, between between described interior pleated portions 3132 and described piston rod 2, be separated with certain interval, this gap can ensure in the time that described dirt-proof boot 3 is compressed, described interior pleated portions 3132 can not contact with described piston rod 2, prevent that piston rod 2 outsides from being scratched by dirt-proof boot 3 and becoming rough, and then impact motion.The angle that the elongation line of two adjacent side 314 forms is 30 ° to 90 °, in this angular range, and easier pressurized air in the time that described dirt-proof boot 3 is compressed.In other embodiments, the angle that the elongation line of two adjacent side 314 forms is to be decided according to the actual requirements.
In this embodiment, described the second joint 312 is bolted with the end 11 of described cylinder body 1, and described the second joint 312 has gap with the end of described cylinder body 1.It should be noted that, in the time that piston rod 2 remains static, described dirt-proof boot 3 (not by compression or extended state) in the raw, now, gas pressure intensity in described dirt-proof boot 3 equates with external pressure, when the second joint 312 of described dirt-proof boot 3, be close on the end 11 of described cylinder body 1, the second joint 312 seals with the end 11 of cylinder body 1, does not have gap, when piston rod 2 down moves, described dirt-proof boot 3 is in the time of compressive state, air in described dirt-proof boot 3 is because pressure change is by compression large, due to inside and outside pressure difference, described the second joint 312 is subject to an inner thrust, making does not have bolted part to there will be small gap between described the second joint 312 and the end 11 of cylinder body 1, the gas with dust that is positioned at dirt-proof boot 3 is just blown out smoothly by this small gap, in the time that dirt-proof boot 3 internal pressures equal described external pressure, described the second joint 312 is fitted with the end 11 of described cylinder body 1 automatically, prevent that external dust from entering in dirt-proof boot by the second joint 312, when piston rod 2 up moves, described dirt-proof boot 3 is in the time of elongation state, air in described dirt-proof boot 3 is because pressure by compression diminishes, dirt-proof boot 3 external pressure increase, now, most of barometric pressure of dirt-proof boot 3 outsides can act directly on described the second joint 312, enters dirt-proof boot 3 although also have a small amount of dust, but these a small amount of dusts immediately can moving downward and because dirt-proof boot 3 is blown by compression, having played equally dustproof effect along with piston rod 2.Therefore,, in the present invention, the gap having between described the second joint 312 and described cylinder body 1 end face 11 is very small, and this gap is the scope that those skilled in the art can design according to the actual demand of related domain.
Please continue to refer to Fig. 1.Motion principle of the present invention is as follows: the hydraulic oil of described cylinder body 1 promotes described piston movement, the described piston rod 2 that described piston driving is attached thereto moves up and down vertically, described piston rod 2 drives the first sealed department 311 of described dirt-proof boot 3 to move up and down together with piston rod 2, then described dirt-proof boot 3 is owing to being stretched and compression, the pleated portions 313 of described dirt-proof boot 3 is moved up and down with piston rod 2, described pleated portions 313 further drives the sidepiece 314 of described dirt-proof boot 3 axially to open or closing motion with respect to described pleated portions 313 along described piston rod 2, and then complete elongation or the compression movement of described dirt-proof boot 3.
Oil cylinder dust guard of the present invention, by dirt-proof boot being set between piston rod and cylinder body, can prevent the be moved into obstruction that cylinder interior to cylinder body cause of external dust with piston rod, also avoid the damage of piston rod simultaneously, ensure the flexibility of piston rod and movement of cylinder block.
Above-mentioned explanation has fully disclosed the specific embodiment of the present invention.It is pointed out that and be familiar with the scope that any change that person skilled in art does the specific embodiment of the present invention does not all depart from claims of the present invention.Correspondingly, the scope of claim of the present invention is also not limited only to previous embodiment.
Claims (10)
1. an oil cylinder dust guard, it comprises:
Cylinder body, is provided with piston in it;
Piston rod, its one end is connected with described piston, and the other end stretches out outside described cylinder body in described cylinder body;
It is characterized in that: it also comprises:
Dirt-proof boot, it is set on the piston rod of described cylinder body outside, described dirt-proof boot one end and described piston rod fixed seal connection, the other end is connected with described cylinder body.
2. oil cylinder dust guard according to claim 1, is characterized in that: it also comprises compensation push rod, and it is arranged on the end of described piston rod and is fixedly connected with described piston rod, and the end of described compensation push rod is provided with nut.
3. oil cylinder dust guard according to claim 2, it is characterized in that: the end of described cylinder body offers perforate, described piston rod one end is fixedly connected with described piston, and the other end stretches out outside described cylinder body through described perforate, wherein, the diameter of described perforate is less than the diameter of described nut.
4. oil cylinder dust guard according to claim 1, is characterized in that: described dirt-proof boot comprises:
The first sealed department, itself and described piston rod are to being tightly connected;
The second joint, it radially and with the end of described cylinder body is connected along described piston rod;
Pleated portions and sidepiece between described the first sealed department and the second joint, described sidepiece is to extend to form to both sides from described pleated portions.
5. oil cylinder dust guard according to claim 4, is characterized in that:
Described piston rod moves up and down vertically, drive the pleated portions of described dirt-proof boot to move up and down with piston rod, described pleated portions drives the sidepiece of its both sides along described piston rod to opening or closing motion with respect to described pleated portions, and then completes elongation or the compression movement of described dirt-proof boot.
6. oil cylinder dust guard according to claim 4, is characterized in that: described pleated portions comprises outer pleated portions and interior pleated portions, and the angle that the elongation line of adjacent side forms is 30 ° to 90 °.
7. oil cylinder dust guard according to claim 6, is characterized in that: between described interior pleated portions and described piston rod, interval is gapped.
8. oil cylinder dust guard according to claim 4, is characterized in that: described the first sealed department is the periphery that is installed in described axial piston bar.
9. oil cylinder dust guard according to claim 4, is characterized in that: the end of described the second joint and described cylinder body is bolted.
10. oil cylinder dust guard according to claim 9, is characterized in that: the end of described the second joint and described cylinder body has gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410005309.XA CN103883586A (en) | 2014-01-07 | 2014-01-07 | Dustproof device for oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410005309.XA CN103883586A (en) | 2014-01-07 | 2014-01-07 | Dustproof device for oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103883586A true CN103883586A (en) | 2014-06-25 |
Family
ID=50952655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410005309.XA CN103883586A (en) | 2014-01-07 | 2014-01-07 | Dustproof device for oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103883586A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358740A (en) * | 2014-10-15 | 2015-02-18 | 苏州北斗夹具装备有限公司 | Cylinder protective sleeve |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4440273A (en) * | 1981-12-28 | 1984-04-03 | Halliburton Company | Aeration preventing shock absorber |
| CN2495849Y (en) * | 2001-09-17 | 2002-06-19 | 上海天通铁路车辆配件有限公司 | Sealing structure for oildraulic shock-absorber |
| CN101016927A (en) * | 2007-02-15 | 2007-08-15 | 株洲联诚集团减振器有限责任公司 | Seal structure of oil-pressure shock absorber |
| CN201078365Y (en) * | 2006-11-08 | 2008-06-25 | 中国第一汽车集团公司 | Booster pump of car clutch |
| CN201221587Y (en) * | 2008-07-04 | 2009-04-15 | 株洲联诚集团减振器有限责任公司 | Seal device of oil pressure vibration damper |
| CN101910673A (en) * | 2008-03-19 | 2010-12-08 | 萱场工业株式会社 | Damper |
| CN202718952U (en) * | 2012-06-17 | 2013-02-06 | 福建省龙岩盛通液压有限公司 | Dustproof hydraulic oil cylinder |
| CN203348408U (en) * | 2013-06-18 | 2013-12-18 | 青岛阿尔斯通铁路设备有限公司 | Oil damper with compensation airbag |
| CN203717528U (en) * | 2014-01-07 | 2014-07-16 | 江苏大洋精锻有限公司 | Oil cylinder dust prevention device |
-
2014
- 2014-01-07 CN CN201410005309.XA patent/CN103883586A/en not_active Application Discontinuation
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4440273A (en) * | 1981-12-28 | 1984-04-03 | Halliburton Company | Aeration preventing shock absorber |
| CN2495849Y (en) * | 2001-09-17 | 2002-06-19 | 上海天通铁路车辆配件有限公司 | Sealing structure for oildraulic shock-absorber |
| CN201078365Y (en) * | 2006-11-08 | 2008-06-25 | 中国第一汽车集团公司 | Booster pump of car clutch |
| CN101016927A (en) * | 2007-02-15 | 2007-08-15 | 株洲联诚集团减振器有限责任公司 | Seal structure of oil-pressure shock absorber |
| CN101910673A (en) * | 2008-03-19 | 2010-12-08 | 萱场工业株式会社 | Damper |
| CN201221587Y (en) * | 2008-07-04 | 2009-04-15 | 株洲联诚集团减振器有限责任公司 | Seal device of oil pressure vibration damper |
| CN202718952U (en) * | 2012-06-17 | 2013-02-06 | 福建省龙岩盛通液压有限公司 | Dustproof hydraulic oil cylinder |
| CN203348408U (en) * | 2013-06-18 | 2013-12-18 | 青岛阿尔斯通铁路设备有限公司 | Oil damper with compensation airbag |
| CN203717528U (en) * | 2014-01-07 | 2014-07-16 | 江苏大洋精锻有限公司 | Oil cylinder dust prevention device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104358740A (en) * | 2014-10-15 | 2015-02-18 | 苏州北斗夹具装备有限公司 | Cylinder protective sleeve |
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Application publication date: 20140625 |